[geeks] Sun 3/4/6800 System Board PROM question

[Sandwich Maker]

" From: Jonathan Katz <jon at jonworld.com>
" 
" I could be 100% wrong. Much of my memory here is fading.
" 
" I'm almost certain you CANNOT move CPUs among the boards, only memory.

i wouldn't be surprised if the cpu boards were completely different
designs.

" I don't think these boards have a PROM that you can move/remove.

iirc everything from the us1 onward has eeprom; obp upgrades are done
by patching.

" http://www.shrubbery.net/~heas/sun-feh-2_1/Devices/System_Board/SYSBD_SunFire_USIIICu.html#OPTIONS
" 
" On Mon, Aug 31, 2015 at 3:03 PM, JP Hindin <jplist2008 at kiwigeek.com> wrote:
" > I've been working on bringing a Sun 6800 back into service over the last two
" > weeks (hobby, not commercial) and managed to finally get everything up,
" > working and Solaris installed yesterday, which was pretty satisfying.
" >
" > I have a mix of System Boards for it - a bunch of uSPARC IVs and a pair of
" > uSPARC IIIs, which you cannot mix in the same domain. Alas one of the IV
" > boards has a bad PROM and so it won't pass POST.
" >
" > I have two questions:
" > Is the PROM on the System Board replacable? I couldn't even _find it_.
" >
" > If not, is there a different between the III and IV System Boards? Can I
" > just pop the 1200mHz IVs off the board with the bad PROM and drop them into
" > the III board, or do the later processors require a later revision of SB?
" >
" > Thanks!
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Andrew Hay                                  the genius nature
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